How to make DIY ceramics

Mud refining: Porcelain stone is taken from the mining area, which is first broken into egg-sized pieces by hand hammer, then ground into powder by water hammer, washed, removed impurities and precipitated into brick-like mud blocks. Then add water to the mud and stir to remove the slag, rub it with both hands or step on it with your feet, and squeeze out the air in the mud to make the water in the mud uniform.